Enhance tutorial with hands-on practice section (#60645)

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Joe Clark <31087804+jc-clark@users.noreply.github.com>

Author: 3 people

content/actions/tutorials/publish-packages/publish-docker-images.md

@@ -234,3 +234,15 @@ Then the `build-push-action` action builds and pushes the Docker image to Docker
 > * To maintain a consistent digest and allow a single attestation to verify all copies, push to one registry first and use a tool like [`crane copy`](https://github.com/google/go-containerregistry/blob/main/cmd/crane/doc/crane_copy.md) to replicate the image elsewhere.
 > * If you choose to build and push to each registry separately instead, you must generate a distinct attestation for each one to ensure your artifacts remain verifiable.
 {% endif %}
+
+## Hands-on practice
+
+Practice publishing Docker images with the [Publishing Docker images](https://github.com/skills/publish-docker-images) {% data variables.product.prodname_learning %} exercise.
+
+In this exercise, you will learn how to:
+
+* Authenticate to {% data variables.product.prodname_registry %} using the `GITHUB_TOKEN`.
+* Build and publish container images to the {% data variables.product.prodname_container_registry %} (`ghcr.io`).
+* Use official Docker actions, such as `docker/login-action`, `docker/build-push-action`, and `docker/setup-buildx-action`.
+* Generate tags automatically with `docker/metadata-action` based on branches, pull requests, and releases.
+* Create features, pull requests, and releases with proper container versioning.

content/copilot/tutorials/modernize-legacy-code.md

@@ -407,13 +407,14 @@ In this example, we looked at an account management system written in COBOL and
 
 ## Hands-on practice
 
-Try the [Modernizing your legacy code with {% data variables.product.prodname_copilot %}](https://github.com/skills/modernize-your-legacy-code-with-github-copilot) Skills exercise for practical experience updating a legacy codebase with {% data variables.product.prodname_copilot %}.
+Practice modernizing legacy code with the [Modernizing your legacy code with {% data variables.product.prodname_copilot %}](https://github.com/skills/modernize-your-legacy-code-with-github-copilot) Skills exercise.
 
-Here is what you will learn:
-* Analyze legacy COBOL code using {% data variables.copilot.copilot_chat %} to understand business logic
-* Generate documentation, including Mermaid data flow diagrams and test plans, with {% data variables.product.prodname_copilot_short %}
-* Modernize the codebase from COBOL to Node.js using {% data variables.product.prodname_copilot_short %}'s code transformation capabilities
-* Create comprehensive unit tests based on the generated test plan
+In this exercise, you will learn how to:
+
+* Analyze legacy COBOL code with {% data variables.copilot.copilot_chat %} to understand business logic.
+* Generate documentation, such as Mermaid data flow diagrams and test plans.
+* Transform a COBOL codebase to Node.js with {% data variables.product.prodname_copilot_short %}.
+* Create unit tests based on the generated test plan.
 
 ## Further reading